This 4x4 HDMI matrix routes 4 Ultra HD sources to 4 4K Ultra HD displays with HDMI inputs. Each source can be routed to any display using the front-panel buttons or the IR Remote Control. The matrix can also be controlled via RS-232 or LAN port. With smart EDID management, make it compatible with most of the HDMI source and sink devices. 

• Max. resolution up to 3840*2160@60Hz.
• Each HDMI output can share same input or select standalone input.
• Supports PCM, Dolby AC3, DTS5.1, DTS7.1 and DSD audio formats.
• Smart EDID management, make it compatible with most display devices.
• Matrix status could be memorized after power down, automatically restoreprevious matrix status after next power on.
• Easy control matrix via IR receiver, front keypad and PC (via LAN or RS232 port).
• Easy to view connection status via LCD display.
• Supports 4 configurable user preset connections.
• HDCP2.2 compliant.
• Support HDR and Dolby Vision.
• Support L/R audio output.

• 1 * 4x4 HDMI Matrix 
• 1 * Remote control
• 1 * 12V 2A Power Adapter
• 1 * User manual

If you choose the same input source on this Matrix for your one 4K TV and two 1080p monitors, they will all output in 1080p (Automatically recognize and adapt the lowest resolution of monitors so that all monitors can output pictures).

The size of this unit is 308 (L) x 150 (W) x 44.5 (H) mm. It can be installed in the rack cabinet through the lug.

No, keyboard and mouse cannot be connected to the matrix, but the KVM switch can be connected.

This HMA0404A1U does not support the 2x2 video wall function. But another model of HMA0404A70 supports Quad Multi-viewer Mode (2x2 video wall controller function).